Add support for the canonical form "G:A:P"

Currently, resolving a dependency with a specific packaging type, requires a version to be specified:

Maven.resolver().loadPomFromFile("pom.xml").resolve("G:A:ejb:V").withoutTransitivity().asSingle(JavaArchive.class);

The version should be optional and the canonical form "G:A:P" should be valid/allowed.